National Item Identification Number
01-388-4467
National Stock Number
Item Name
WASHER,RECESSED
Federal Supply Class
5310
Description
A washer of any peripheral shape having a centrally located hole. Both bearing surfaces are parallel and flat, but one or both of the bearing surfaces must be broken by a counterbore, countersink, or similarly shaped recess. The thickness must not exceed 25 per cent of the outside diameter or the largest outside dimension. The maximum limit of the tolerance or range applied to the thickness and/or largest outside dimension must be used to determine compliance. Excludes WASHER, CONCAVE, RETAINER, PACKING, and thrust type washers. See also SPACER, SLEEVE; and SPACER, STEPPED.
Commercial and Government Entity Code (Supplier Data)
6Y603
FABORY USA LTD.
8715A BYRON COMMERCE SW STE A
BYRON CENTER
MI
49315
616-583-4014
D8286
DIN DEUTSCHES INSTITUT FUER NORMUNG
EV
BURGGRAFENSTR. 6
BERLIN
10787
GERMANY
030-2601-0
Reference Numbers (Part Numbers)
DIN128-A3
DIN128-A3-1.4310
Required Categories
MATERIAL
HARDNESS RATING
HOLE DIAMETER
OUTSIDE DIAMETER
OVERALL HEIGHT
MATE
Required Description
STEEL OVERALL
44.0 ROCKWELL C MINIMUM AND
51.0 ROCKWELL C MAXIMUM
3.1 MILLIME